| Mortality rate | N | Mean | S.D | Variance | F | Number DF | Denom DF | Prob > F | |
| Field and FI dead snails | Field | 30 | 6.03 | 2.025 | 4.103 | 1.62 | 29 | 29 | 0.2 |
| F1 | 30 | 2.47 | 1.591 | 2.533 | |||||
| Field and F2 dead snails | Field | 30 | 6.03 | 2.025 | 4.1 | 1.06 | 29 | 29 | 0.87 |
| F2 | 30 | 3.07 | 1.96 | 3.85 | |||||
| F1 and F2 dead snails | F1 | 30 | 2.47 | 1.59 | 2.53 | 0.65 | 29 | 29 | 0.263 |
| F2 | 30 | 3.07 | 1.94 | 3.86 |